Trolley-harp.



- No. 692,5l9.

' A. muso". q

' TnoLLEv H ARP. (Appucatin led'oct. 1o, 1901)v Patented feb. 4, |962. f

ALFRED Jo`I-1Ngs`on',.orfQUrNcY, ILLINOIS.

TROLLEY-HARP.

srno'rrrcnrron forming pm of Leners rarest No. eeatiewaateurenmty a, woog.,

' Appunti@ nea october 10,1901. sesamo.ranswntman.) f

T all whomfz' mary concern:

Beit knowntnat I, ALFRED Jonsson, a citizen of theUnited States, residing at Quincy,

' in the county of Adams and Stal-e of illinois,

have inventedcertain new and useful Improvements'in Trolley-Harpe; and l do hereby declare the following to be a full, clear,

Vand exact description ofthe saine, reference being had to the .accompanying drawings, forming a part of this'speciiication, and `to the letters of reference marked thereon.

` pole and is known as the trolleydnarp77 Theobjects of the' invention are to provide a simple structurev in which the contactf.

springs may be conveniently and cheaply rei placed or renewed when'worn and at the same ti'me held rigidly andv so as to insure a good electrical contact.

The invention consists-in certain novel details ofconstru'ction and combinations and arrangements of parts,`all as will be now described, and point-ed out particularly in the appended claims. lf

ln the accompanying drawings, Figure l is an elevation of the upper end of a trolley-pole and trolley-harp embodying the presentim'- provements. Fig. 2 is a longitudinal section.

Like letters of reference in both figures indicate the same parts'.

The trolley-pole (indicated by the letter A) may be of any usual or preferred construe tion, but adaptedat its upper end-for the attach ment of the head or trolley-*harp B. The upper portion of the latter is bifurcated, and the arms B are provided with bearings for the journal or axle of the trolley-.wheel C, the

latter running between the arms and in position to contact with the overhead trolley-wire, as usual.

For insuring good electrical contact between the trolley-wheel and pole or conductor for conveying the current down to the car ,spring contact-arms D bear against opposite sides of the trolley-wheel within the arms B andare iirmly united with the body of the trolleydiarp, so as to insure good electrical contact as well as a-irin and rigid support. v'The spring-arms preferably contact with the hub portions ofthe trolley-wheel, and hence preferably. surround the' journal or axle there of, while at their lower endsv said spring-arms v proj ct down into a recess having converging side alls F. A wedge-block G is l iliserted'iu the recess between the ends of the'arms and when forcedl down clamps'them rmly'in their ladjusted position and at the same-.time insures a good electrical contact, sucln'. will not be affected by weather or other condil ions.

The preferred means fory forcing thewedge downward to clampthe contact-spi`ings consists of a bolt H, passing down through' the wedge,vthrough anopening-in the body of the harp,'whiclr maybe threaded, and into engagement with a nut I, located in a cavity or slot K in the base of the harp, as showny The head of the bolt may be slotted for the eception of a screw-driver, and thus in ad- Justing 'the parts the spring-arms may beins'erted and the bolt set up from the upper end of the harp before the trolley-wheel is put in place.

gagement with the wire a rope islemploy'ed, and to secure this rope' to the pole at the base of the harp 'a clamp having an eye L surrounding the pole is employed, said clamp being provided with a circular recess m, in which the endof the rope lies. The two sides -N of the clamp are preferably made separate and are united and the rope clamped by acenltrai bolt or screw.0,as will be readily under- Having thus described myinventiom'what I-clairn as new,nnd desire to secure by'Letters Patent, is-' I l. The combination withat1-olle},harphav ing a bifnrcated u per end and a tapered rc cess atthe base-o the'bifurcated portion, a trolley-wheel journaled between the arms of.

For drawing `the trolley-pole down out ofenr said harp, of contact-springs bearing on said wheel and having'` their lower ends locatedy within the tapered recess, and an adjustable-` tapered plug located in said recess between the contact-springs for clamping the latter in position; substantially as described.

2. The combination with a trolley-ha rp having its upper end bifurcatedforming arms and a tapered recess at the base and between the arimgand a. trolley-wheel'journaled between, ving the plug in place and whereby Said bolt the ends of said arms, of contact-springs bear-y may be operated from the upper end of the xo jmg on opposite sides of the hub of said wheel harp; substantially as described.

andrextendng dewn between said arms and into the tapered recess., a tapered plug be- 1 tween said springs for clamping them in said v Witnesses: recess, and a. bolt passing down'through said I L. E. EMMONS,

ALFRED JOHNSON.

. phlgnd into the base of the harp for held- L. EMMONS, Jr. 

